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99 7.3 sputter, surge while running under load.
I have a 99 7.3 with 543,000 on it pulled some containers down to Florida this week. When I would get to running at highway speed sometimes I would develop for lack of better words a sputter, not a complete miss. The truck would loose some power and surge a little to. I have replaced the fuel filter and the supply pump had tank screens cleaned and reuglator spring done. Back a few months ago I replaced #2,8,3 and 5 injectors with New alliant ones. I notice when the sputter starts it surges a little at idle for a little while till it smooths out. Also I can detect the sputter while shifting when it starts. but the is no dead miss and the exhaust at tailpipe is smooth. I get no miss codes or bad injector codes. The only code I get is waste gate selenoid performance which I have had for years and exhaust backpressure valve performance P0476 , P1690. I also replaced the ebp sensor and checked tube. Can injectors fail inttermitently without coding up? I also notice it makes a crackle type noise when accellerating when it starts acting up.
Last edited by mcgoo422000; 02-23-2013 at 02:32 PM.